If you are working on water system for a water system with more than 15 service connections, or that serves more than 25 people more than 60 days out of the year, please contact the Ohio Environmental Protection Agency (Ohio EPA) District Office of Drinking and Ground Waters prior to obtaining a permit from the local health district. The Ohio EPA will determine if you meet the requirements as a public water system. If not, contact your Local Health District to obtain a permit to construct, alter, or seal a private water system.